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Sky Watcher 8” OTA For Sale

Price - $200.00

Ad Number: 208818

Posted: 22 May 2020

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For sale Sky Watcher 8” f6 Reflector OTA.

I have modified the OTA by replacing the 1.5” secondary with a 1.3” Protostar Quartz mirror, extending the truss poles to accommodate the smaller secondary, installed curved spider vanes, and shortened the focuser draw tube.

By my rough star test estimate—defraction rings are close to the same on either side of focus with a bit sharper on one side and a bit fuzzier on the other. In focus, overhead stars like the double double are tight disks with one strong defraction ring around each star as expected with a secondary. OTA weighs about 20 pounds.

Selling tube without finder and without dob base as I purchased it.

Scope is fine—I am just wanting a change with lighter weight refractors as quick look scopes and public outreach (if and when happens again).
Looking for local sale in the north Texas area. Original box sadly was destroyed by water damage in a hot water heater leak. I do still have the traditional secondary spider vanes that could be reinstalled.

Paid $250 shipped last year. New secondary about $100. Willing to sell for $200 locally.


  • Condition Very Good
  • Location North Texas—DFW

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